VCR head drum coated with diamond-like hard carbon films and the

Details VCR head drum coated with diamond-like hard carbon films and the VCR head drum coated with diamond-like hard carbon films and the

1997-03-19

1998-06-16

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

36013024, 20419216, G11B 540, C23C 1600

Patent

active

057680469

ABSTRACT:
A head drum is coated with double films, each having different characteristics, by forming a first diamond-like hard carbon film of high degree of hardness and then forming a second diamond-like hard carbon film of a lower degree of hardness thereon. The degree of hardness of the second film is lower than that of the first film. The double coating is performed by means of a synthesizing apparatus which comprises a reactor consisting of a power supply electrode, a workpiece support and an annular ground electrode spaced from the stacked head drums by a predetermined distance.

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Thin Soliid Films, vol. 212, pp. 240-244, 1992, N. Nakaue, et al., "Applications of Diamond-Like Carbon Films to Electronic Components".

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